In recent times Thailand is not even a sanctuary for refugees and asylum seekers who are at risk from political persecution, or even death. It seems unlikely that the Kingdom will provide refuge for foreign gay couples who are trying to escape from persecution in their neighbouring states.
In 2015, the government deported at least 109 Uyghurs to China.
In November 2021, Thai authorities deported four Cambodian dissidents, Mich Heang, Lahn Thavry, Veourn Veasna, and Voeung Samnang, who were registered refugees living in the country under the protection of the UNHCR. All four were immediately arrested upon being returned to Cambodia.
Multiple practitioners of Falun Gong have been detained by the Thai government, including Chiang Yung-Shin, a Taiwanese man who helped to send uncensored radio broadcasts to China.
As the recent case of the Cambodian dissidents demonstrates, it is not unusual for individuals under officially recognized international protection to be expelled from the country at the request of a foreign government.
https://freedomhouse.org/report/transnational-repression/thailand